AQA AS UNIT 2 FULL NOTES

****DISCLAIMER*****

THESE ARE NOT MY NOTES AND I DID NOT MAKE THEM AT ALL !!!!  THESE ARE NOTES THAT I FOUND ON THE INTERNET THAT ARE VERRY GOOD AND ALSO VERY USEFULL THAT I WOULD LIKE TO SHARE WILL OTHER WHO ARE IN NEED

HideShow resource information
  • Created by: Mist
  • Created on: 18-11-14 12:04
Preview of AQA AS UNIT 2 FULL NOTES

Other pages in this set

Page 2

Preview of page 2

Page 3

Preview of page 3

Here's a taster:

AS Biology Unit 2 page 1
AQA AS Biology Unit 2
Contents
Specification 2 Gas exchange 4 The Circulatory System 11 Haemoglobin 18 Plant Cells 21 Gas
exchange in plants 24 Water Transport in Plants 26 Biodiversity 33 Intraspecific Diversity 34
Interspecific Diversity 39 DNA 43 DNA replication 46 Gene Expression 48 Chromosomes 51 Mitosis
and the Cell Cycle 55 Meiosis and Sexual Reproduction 58 Antibiotic Resistance 61 Classification 65
Appendix 1 ­ Mathematical Requirements 74 Appendix 2 ­ The Unit 2 Exam 76
These…read more

Page 4

Preview of page 4

Page 5

Preview of page 5

Page 6

Preview of page 6

Here's a taster:

AS Biology Unit 2 page 2
Biology Unit 2 Specification
Physiology Surface Area to Volume Ratio The relationship between the size of an organism or structure and surface area to
volume ratio. Explain the significance of the relationship between size and surface area to volume ratio for the exchange of
substances and of heat.
Gas Exchange Changes to body shape and the development of systems in larger organisms as adaptations that facilitate exchange
as the ratio reduces.…read more

Page 7

Preview of page 7

Here's a taster:

N (N ­ 1) / n (n ­ 1) where N = total number of organisms of all species and n = total number of
organisms of each species. Calculate the index of diversity from suitable data.
Loss of Species Diversity The influence of deforestation and the impact of agriculture on species diversity. Interpret data relating
to the effects of human activity on species diversity and be able to evaluate associated benefits and risks.…read more

Page 8

Preview of page 8

Page 9

Preview of page 9

Page 10

Preview of page 10

Here's a taster:

AS Biology Unit 2 page 3
Genetics
different combinations of maternal and paternal DNA
Structure
chromosomes. The doublehelix structure of DNA
enabling it to act as a stable informationcarrying molecule, in terms of the components of DNA nucleotides: deoxyribose,
phosphate and the bases adenine, cytosine, guanine and thymine two sugarphosphate backbones held together by hydrogen
bonds between base pairs specific base pairing. DNA is the genetic material in bacteria as well as in most other organisms.…read more

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all resources »